Sewing Machine Needle Size Chart: Which Needle to Use

On this page (8 sections)

1. How do you read a sewing machine needle size chart?
2. Which needle size suits common fabrics?
3. Does needle type matter as much as size?
4. How can you tell if a needle is the wrong size?
5. How should you set up and test a new needle?
6. When should you replace a sewing machine needle?
7. How do you choose the right sewing machine needle size?
8. Which needle should you choose for your project?

A sewing machine needle size chart helps you match needle thickness to fabric weight and needle type to fabric construction. Start with the chart below, then test your choice on a scrap with the same fabric and layers as your project.

These sizes are starting points. Fabric thickness, the number of layers, thread, and your machine's guidance can change the right choice.

How do you read a sewing machine needle size chart?

A needle marked 80/12 is size 80 in the European system and size 12 in the American system. The larger the number, the thicker the needle.

Both numbers refer to one needle, not two different sizes. Packs may show one system, both systems, or a range, so check the label when choosing a replacement.

Size describes thickness, while type describes the point and shape. A jeans needle, for example, is designed differently from a universal needle to handle dense fabric.

Which needle size suits common fabrics?

Start with the fabric's weight and construction, then adjust after sewing a sample. A needle that works on one layer of cotton may struggle through a folded hem or several layers.

What size needle should you use for cotton?

For light to medium cotton, start with a universal needle in size 70/10 or 80/12. Heavier cotton, twill, or multiple layers may need a larger size, such as 90/14.

Test a scrap with the same layer count as your project. If stitches skip, the fabric puckers, or the needle struggles, stop and check its type and size, your threading, and the machine manual.

What size needle works for knit fabric?

For knit fabric, choose a ballpoint, jersey, or stretch needle suited to its weight. Its rounded point is designed to pass between knit loops instead of piercing them like a sharp point.

A universal needle's slightly rounded point can work for many knits, but may not suit every stretch fabric. Test a hidden scrap and look for skipped stitches, snags, or damaged loops.

Schmetz Universal Needles come in assorted sizes and have a slightly rounded point for a range of woven and knit fabrics.

What size needle should you use for denim?

For denim, choose a jeans or denim needle sized for the fabric and number of layers. Size 90/14 can suit lighter denim, while thick denim or bulky seams may need 100/16 or 110/18.

Schmetz Jean and Denim Needles are size 110/18 and are intended for dense materials such as denim, twill, and layered quilts.

Before sewing the finished item, test a folded seam. If the needle bends, knocks against the fabric, or skips stitches, stop and reassess the size, layers, and machine's limits.

What size needle is right for leather?

Leather calls for a leather needle with a cutting point, sized for the material's thickness. Sizes 90/14 or 100/16 can be a starting point for medium-weight leather, but check the material and machine guidance.

A leather needle cuts the material, so each stitch can leave a permanent hole. Test stitch length and placement on a scrap because unpicking may leave visible marks.

Singer Denim and Leather Needles include size 90/14 for medium-weight leather and a triangular-point needle for leather and vinyl.

Does needle type matter as much as size?

Yes: size sets thickness, and type matches the point and shape to the fabric. A thicker needle does not make a woven-fabric needle suitable for every knit or for leather.

A universal needle is a practical choice for many woven and knit materials. For specialty fabric, choose a type made for that material, then select a size that can pass through it without leaving oversized holes.

Leather and Jeans Needles are size 100/16 and are intended for thick fabric such as jeans and leather.

Check your manual before sewing, especially when the project has several layers. If your machine struggles with thick seams, read our guide to sewing machines for thick fabric.

How can you tell if a needle is the wrong size?

A poor match can struggle to pierce fabric, bend, skip stitches, or leave holes that look too large. Stop sewing and inspect the needle and setup instead of forcing the fabric through.

A needle that's too small for dense fabric may bend or break. One that's too large for fine fabric can leave visible holes or damage delicate threads.

Other setup problems can produce similar symptoms. Check that the needle is inserted correctly, the thread suits the fabric and needle eye, and the machine is threaded as its manual directs.

If your thread keeps breaking, use the thread breakage troubleshooting guide to check other likely causes. For basic setup and first stitches, see how to use a sewing machine.

How should you set up and test a new needle?

Test on a scrap that matches the project fabric and layer count. Sew a few straight stitches, then check both sides for balanced stitches, snags, skipped stitches, puckering, and needle marks.

Change one setting or choice at a time if the sample looks wrong. Try another needle size or type, rethread the machine, or adjust tension according to the manual, then sew a fresh sample.

Use the same thread and stitch settings planned for the project. If you're changing stitch length too, our guide to sewing machine stitch length explains how stitch spacing affects the result.

When should you replace a sewing machine needle?

Replace a needle when it's bent, dull, damaged, or causing problems that a setup check doesn't fix. A damaged needle can harm the fabric or machine, so stop sewing if it looks bent or feels rough.

SINGER recommends changing its needles every 8 to 10 hours of sewing or at the start of a new project. Follow your machine and needle maker's guidance, and keep spare needles in a labeled case.

Turn off the machine before changing the needle, and install it in the direction shown in the manual. For setup help, see our guide to threading a sewing machine.

How do you choose the right sewing machine needle size?

Choose a needle type for the fabric, then a size for its weight and layers. Use the chart as a starting point, test on a matching scrap, and follow your machine manual if it gives different guidance.

For mixed household sewing, assorted universal sizes can cover many woven and knit fabrics. For denim or leather, choose a specialty needle for the material and project thickness.

If your test stitch looks uneven, check the needle, threading, and stitch settings before sewing the project. Our guide to presser feet and their uses can help with the next setup choice.

Which needle should you choose for your project?

For everyday woven fabric and many knits, choose an assorted universal set and match the size to the fabric weight. For denim, canvas, or layered quilts, choose a jeans needle sized for the layers; for leather or vinyl, use a leather needle with a cutting point.

Use the sewing machine needle size chart to narrow your choice, then let a test scrap confirm it. If your machine manual limits needle types or sizes, follow that guidance first.

Frequently asked questions

What size sewing machine needle should I use?

Choose a needle size that suits the fabric's weight and thickness. A size 70/10 or 80/12 is a common starting point for light to medium woven fabric, while heavier fabric may need a larger size such as 90/14 or 100/16.

Check your machine manual and test the choice on a scrap.

What do the two numbers on a sewing machine needle mean?

The two numbers show the needle size in two numbering systems: the first is the European size and the second is the American size. For example, 80/12 pairs European 80 with American 12.

A larger number means a thicker needle, generally suited to heavier fabric.

Can I use a universal needle for knit fabric?

A universal needle has a slightly rounded point and can work on many woven and knit fabrics. For stretchy or delicate knits, a ballpoint or stretch needle may suit the fabric better and help avoid damaged loops or skipped stitches.

Test on a scrap and follow the fabric maker's guidance.

How often should I change a sewing machine needle?

Change a needle when it becomes bent, dull, or damaged, or when stitches begin skipping despite correct threading and setup. SINGER recommends changing its needles every 8 to 10 hours of sewing or at the start of a new project.

A fresh needle also helps rule out needle wear during troubleshooting.